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- uClibc - a Small C Library for Linux
- Erik Andersen <andersen@codepoet.org>
- uClibc (aka µClibc/pronounced yew-see-lib-see) is a C library for
- developing embedded Linux systems. It is much smaller than the
- GNU C Library, but nearly all applications supported by glibc
- also work perfectly with uClibc. Porting applications from glibc
- to uClibc typically involves just recompiling the source code.
- uClibc even supports shared libraries and threading. It currently
- runs on standard Linux and MMU-less (also known as µClinux)
- systems with support for alpha, ARM, i386, i960, h8300, m68k,
- mips/mipsel, PowerPC, SH, SPARC, and v850 processors.
- If you are building an embedded Linux system and you find that
- glibc is eating up too much space, you should consider using
- uClibc. If you are building a huge fileserver with 12 Terabytes
- of storage, then using glibc may be a better choice...
- uClibc is maintained by Erik Andersen and is licensed under the
- GNU LIBRARY GENERAL PUBLIC LICENSE . This license allows you to
- make closed source commercial applications using uClibc (Please
- consider sharing some of the money you make ;-). You do not need
- to give away all your source code just because you use uClibc
- and/or run on Linux.
- For installation instructions, see the file INSTALL.
- This distribution contains a wrapper for gcc and ld that allows you
- to use existing toolchains that were targetted for glibc. See
- extra/gcc-uClibc/ for information.
- uClibc strives to be standards compliant, which means that most
- documentation written for functions in glibc also applies to uClibc
- functions. However, many GNU extensions are not supported because
- they have not been ported, or more importantly, would increase the
- size of uClibc disproportional to the added functionality.
- Additional information (recent releases, FAQ, mailing list, bugs,
- etc.) can be found at http://www.uclibc.org/.
- uClibc may be freely modified distributed under the terms of the
- GNU Library General Public License, which can be found in the
- file COPYING.LIB.
- Please Note:
- There is an unwholesomely huge amount of code out there
- that depends on the presence of GNU libc header files.
- We have GNU libc header files. So we have committed a
- horrible sin in uClibc. We _lie_ and claim to be GNU
- libc in order to force these applications to work as their
- developers intended. This is IMHO, pardonable, since
- these defines are not really intended to check for the
- presence of a particular library, but rather are used to
- define an _interface_. Some programs are especially
- chummy with glibc, and may need this behavior disabled
- by adding CFLAGS+=-D__FORCE_NOGLIBC
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